反应详情

A solution of (1R,3R,4S)-{4-[(3S)-3-amino-2-oxo-pyrrolidin-1-yl]-3-propyl-cyclohexyl}-carbamic acid tert-butyl ester (0.27 mmol assumed) in DMF (4 mL) was charged with 2-(3-isopropyl-ureido)-5-trifluoromethyl-benzoic acid (82 mg, 0.3 mmol), N,N-diethylisopropylamine (0.19 mL, 1.1 mmol), and BOP (142 mg, 0.32 mmol). The reaction was stirred for 48 h at RT and then partitioned between EtOAc and sat. NaHCO3; the aqueous phase was back extracted with EtOAc (1×). The organic phases were combined, washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo to afford (1R,3R,4S)-(4-{(3S)-3-[2-(3-isopropyl-ureido)-5-trifluoromethyl-benzoylamino]-2-oxo-pyrrolidin-1-yl}-3-propyl-cyclohexyl)-carbamic acid tert-butyl ester. MS found: (M+H)+=612.3.

1. custompartitioned between EtOAc and sat. NaHCO3
2. extractionthe aqueous phase was back extracted with EtOAc (1×)
3. washwashed with brine
4. dry with materialdried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated in vacuo